Company lists · Data refreshed September 2026

Top 16 Clean energy consulting firms based in Thailand

RevenueBase identified 44 clean energy consulting firms headquartered in Thailand as of September 2026 and tracks 404 professional contacts across them, including 48 with verified work emails. Bangkok is the largest hub.

This list covers clean energy consulting firms headquartered in Thailand, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 14, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 14, 2026 86% judged on-target in blind review
44Companies
404Contacts tracked
48Verified emails
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The 16 largest clean energy consulting firms based in Thailand

Ranked by team size
Top 16 of 44 clean energy consulting firms based in Thailand, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to clean energy consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceBangrak, ThailandHQ checked Sep 14, 2026501-1,000100 contacts →

Partial evidence

“GreenYellow in Asia is the trusted energy partner of C&I companies to make their energy transition a success.”

Source: RevenueBase Database · checked Sep 14, 2026
2Indirect evidenceRongmuang, ThailandHQ checked Sep 14, 202611-5023 contacts →

Indirect evidence

“Africus Co, Ltd.”

Source: RevenueBase Database · checked Sep 14, 2026
3Strong evidenceKlong Toei, ThailandHQ checked Sep 14, 202611-5020 contacts →

Strong evidence

“Asia Clean Energy Partners is an international firm that provides consulting, advisory, and project origination services related to the energy sector.”

Source: RevenueBase Database · checked Sep 14, 2026
4Partial evidenceประเวศ, ThailandHQ checked Sep 14, 202651-20019 contacts →

Partial evidence

“Green Growth Strategic Consultant -HVAC Energy Efficiency -SMAC: Shaw Method of Air Conditioning patent proprietor in Thailand -Awarding Winning Energy Service Company of the Year…”

Source: RevenueBase Database · checked Sep 14, 2026
5Partial evidencePathum Wan, ThailandHQ checked Sep 14, 202611-5019 contacts →

Partial evidence

“Tact Sustainability Consulting is your dedicated partner in driving sustainable transformations through innovation and collaboration.”

Source: RevenueBase Database · checked Sep 14, 2026
6Strong evidenceLumpini, ThailandHQ checked Sep 14, 202651-20017 contacts →

Strong evidence

“We work with partners to provide clean-energy engineering, consultancy, solutions and corporate training services to investors and asset owners in SE Asia.”

Source: RevenueBase Database · checked Sep 14, 2026
7Indirect evidenceBangkok, ThailandHQ checked Sep 14, 202651-20010 contacts →

Indirect evidence

“Sun LED (Thailand) Co, Ltd.”

Source: RevenueBase Database · checked Sep 14, 2026
8Partial evidenceBangkok, ThailandHQ checked Sep 14, 20261-109 contacts →

Partial evidence

“Green Building Consulting & Engineering is an award-winning Thailand based consultancy creating high performance buildings that improve people’s well-being while preserving the…”

Source: RevenueBase Database · checked Sep 14, 2026
9Indirect evidenceBangkok, ThailandHQ checked Sep 14, 202611-505 contacts →

Indirect evidence

“We are the top firm for renewable technologies with a 22 years of engineering experience.”

Source: RevenueBase Database · checked Sep 14, 2026
10Partial evidenceMuang, ThailandHQ checked Sep 14, 20261-105 contacts →

Partial evidence

“Established in 2023, KORA Climate is built on the foundation of the long joint experiences of the founding members in various fields such as Renewable Energy, Environment…”

Source: RevenueBase Database · checked Sep 14, 2026
11Indirect evidenceBangkok, ThailandHQ checked Sep 14, 20261-103 contacts →

Indirect evidence

“With Headquarters residing in Singapore and Thailand, Tenja Capital was founded with the mission of helping clients succeed in an ever expanding ever changing competitive…”

Source: RevenueBase Database · checked Sep 14, 2026
12Partial evidenceBangkok, ThailandHQ checked Sep 14, 202611-503 contacts →

Partial evidence

“OUR HISTORY Over the past 25 years, our company built an impressive and successful track records in energy efficiency and sustainability carbon management.”

Source: RevenueBase Database · checked Sep 14, 2026
13Indirect evidenceBangkok, ThailandHQ checked Sep 14, 202611-503 contacts →

Indirect evidence

“Solar Express founded by groups of project Engineers whose highly experience in their field of electrical engineering, civil engineering and Industrial engineering.”

Source: RevenueBase Database · checked Sep 14, 2026
14Indirect evidenceBangkok, ThailandHQ checked Sep 14, 20261-102 contacts →

Indirect evidence

“Let's fight climate change and solarize Thailand.”

Source: RevenueBase Database · checked Sep 14, 2026
15Indirect evidenceBangkok, ThailandHQ checked Sep 14, 20261-102 contacts →

Indirect evidence

“Technic Electrical Engineering (Thailand) Co, Ltd.”

Source: RevenueBase Database · checked Sep 14, 2026
16Strong evidenceHuai Yai, ThailandHQ checked Sep 14, 202611-501 contacts →

Strong evidence

“NCA-Solar is full service, energy efficiency consulting firm founded on three main principles - Innovation - Sustainability - Efficiency At NCA-Solar we create value for our…”

Source: RevenueBase Database · checked Sep 14, 2026

Showing 16 of 44 clean energy consulting firms based in Thailand

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Clean energy consulting firms based in Thailand at a glance

As of Sep 14, 2026
11.9%Verified-email coverage
9.2Average contacts per company
11-50Median size (employees)
59.1%Largest-city concentration · Bangkok
Sep 14, 2026Page data refreshed

Companies by employee count

1-10
14
11-50
22
51-200
6
501-1,000
2

Email recency for this list is measured worldwide rather than for Thailand, so it is reported there. Company counts and contact totals on this page are exact for Thailand, over 44 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among clean energy consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Thailand whose own description of what they do matches “clean energy consulting firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names clean energy consulting firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among clean energy consulting firms, and records with no verified work email. Companies headquartered outside Thailand are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 48 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 14, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Clean energy consulting firms by metro

  • Clean energy consulting firms in Bangkok26

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names clean energy consulting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many clean energy consulting firms are there based in Thailand?

RevenueBase identified 44 clean energy consulting firms headquartered in Thailand as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Greenyellow Asia, headquartered in Bangkok, tops this list with the largest team on record.

Which city has the most clean energy consulting firms?

Bangkok leads with 26 headquartered companies, followed by Bangkok City (1) and Bangna (1).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 48 verified decision-maker contacts tracked across these 44 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 14, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.